x = int(input())

def score(x):
 if  400 <= x <= 599:
        print("8")
 elif 600 <= x <= 799:
        print("7")
 elif 800 <= x <= 999:
        print("6")
 elif 1000 <= x <= 1199:
        print("5")
 elif 1200 <= x <= 1399:
        print("4")
 elif 1400 <= x <= 1599:
        print("3")
 elif 1600 <= x <= 1799:
        print("2")
 elif 1800 <= x <= 1999:
        print("1")

score(x) x = int(input()) x int(input()) int input() input def score(x):
 if  400 <= x <= 599:
        print("8")
 elif 600 <= x <= 799:
        print("7")
 elif 800 <= x <= 999:
        print("6")
 elif 1000 <= x <= 1199:
        print("5")
 elif 1200 <= x <= 1399:
        print("4")
 elif 1400 <= x <= 1599:
        print("3")
 elif 1600 <= x <= 1799:
        print("2")
 elif 1800 <= x <= 1999:
        print("1") score if  400 <= x <= 599:
        print("8")
 elif 600 <= x <= 799:
        print("7")
 elif 800 <= x <= 999:
        print("6")
 elif 1000 <= x <= 1199:
        print("5")
 elif 1200 <= x <= 1399:
        print("4")
 elif 1400 <= x <= 1599:
        print("3")
 elif 1600 <= x <= 1799:
        print("2")
 elif 1800 <= x <= 1999:
        print("1") 400 <= x <= 599 400 <= x 400 x 599 print("8") print "8" elif 600 <= x <= 799:
        print("7")
  600 <= x <= 799 600 <= x 600 x 799 print("7") print "7" elif 800 <= x <= 999:
        print("6")
  800 <= x <= 999 800 <= x 800 x 999 print("6") print "6" elif 1000 <= x <= 1199:
        print("5")
  1000 <= x <= 1199 1000 <= x 1000 x 1199 print("5") print "5" elif 1200 <= x <= 1399:
        print("4")
  1200 <= x <= 1399 1200 <= x 1200 x 1399 print("4") print "4" elif 1400 <= x <= 1599:
        print("3")
  1400 <= x <= 1599 1400 <= x 1400 x 1599 print("3") print "3" elif 1600 <= x <= 1799:
        print("2")
  1600 <= x <= 1799 1600 <= x 1600 x 1799 print("2") print "2" elif 1800 <= x <= 1999:
        print("1") 1800 <= x <= 1999 1800 <= x 1800 x 1999 print("1") print "1" x x score(x) score x def score(x):
 if  400 <= x <= 599:
        print("8")
 elif 600 <= x <= 799:
        print("7")
 elif 800 <= x <= 999:
        print("6")
 elif 1000 <= x <= 1199:
        print("5")
 elif 1200 <= x <= 1399:
        print("4")
 elif 1400 <= x <= 1599:
        print("3")
 elif 1600 <= x <= 1799:
        print("2")
 elif 1800 <= x <= 1999:
        print("1") def score(x):
 if  400 <= x <= 599:
        print("8")
 elif 600 <= x <= 799:
        print("7")
 elif 800 <= x <= 999:
        print("6")
 elif 1000 <= x <= 1199:
        print("5")
 elif 1200 <= x <= 1399:
        print("4")
 elif 1400 <= x <= 1599:
        print("3")
 elif 1600 <= x <= 1799:
        print("2")
 elif 1800 <= x <= 1999:
        print("1") score x = int(input()) int(input()) x
x = int(input())

def score(x):
 if  400 <= x <= 599:
        print("8")
 elif 600 <= x <= 799:
        print("7")
 elif 800 <= x <= 999:
        print("6")
 elif 1000 <= x <= 1199:
        print("5")
 elif 1200 <= x <= 1399:
        print("4")
 elif 1400 <= x <= 1599:
        print("3")
 elif 1600 <= x <= 1799:
        print("2")
 elif 1800 <= x <= 1999:
        print("1")

score(x)